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append tables content to an existing tables [message #482094] Tue, 09 November 2010 08:39 Go to next message
sailesh
Messages: 72
Registered: September 2007
Location: MAURITIUS
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Hi all,

I am facing a problem on oracle 11gR2 where i have to import data from a source database to an existing table without truncate or drop the target table in the target database.

we have found something called table_exist_action=append in impdp.

Thanks,

Sailesh
Re: append tables content to an existing tables [message #482095 is a reply to message #482094] Tue, 09 November 2010 08:52 Go to previous messageGo to next message
Michel Cadot
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And the question is?

Regards
Michel
Re: append tables content to an existing tables [message #482108 is a reply to message #482095] Tue, 09 November 2010 12:36 Go to previous message
Littlefoot
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Registered: June 2005
Location: Croatia, Europe
Senior Member
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What is the "source" here? Records exported with what utility? EXP or EXPDP?

If it was EXP, then all you have to do is to include the IGNORE=Y parameter. It will make it possible to continue with import even though the table exists. All "duplicates" (as of primary/unique keys/indexes) will be rejected. All new records will be imported. Here's an example: I created a T_DEPT table in Scott's schema (equal to his DEPT table); unique index is on DEPTNO column:
SQL> create table t_dept as select * from dept;

Table created.

SQL> create unique index uitd on t_dept (deptno);

Index created.

SQL> select * from t_dept;

    DEPTNO DNAME          LOC
---------- -------------- -------------
        10 ACCOUNTING     NEW YORK
        20 RESEARCH       DALLAS
        30 SALES          CHICAGO
        40 OPERATIONS     BOSTON

SQL>

In another user's schema (it is MIKE), I created another T_DEPT table. Deleted a few records, inserted a new one:
SQL> show user
USER is "MIKE"
SQL> select * from t_dept;

    DEPTNO DNAME          LOC
---------- -------------- -------------
        99 test           test
        10 ACCOUNTING     NEW YORK
        20 RESEARCH       DALLAS

SQL>



OK, let's export Mike's T_DEPT table:
SQL> $exp mike/lion@ora10 tables=t_dept file=t_dept.dmp

Export: Release 10.2.0.1.0 - Production on Uto Stu 9 19:32:54 2010

Copyright (c) 1982, 2005, Oracle.  All rights reserved.


Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
Export done in EE8MSWIN1250 character set and AL16UTF16 NCHAR character set

About to export specified tables via Conventional Path ...
. . exporting table                         T_DEPT          3 rows exported
Export terminated successfully without warnings.

SQL>

Let's import it into Scott's schema. See what's going on:
SQL> $imp scott/tiger@ora10 file=t_dept.dmp ignore=y full=y

Import: Release 10.2.0.1.0 - Production on Uto Stu 9 19:33:39 2010

Copyright (c) 1982, 2005, Oracle.  All rights reserved.


Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options

Export file created by EXPORT:V10.02.01 via conventional path

Warning: the objects were exported by MIKE, not by you

import done in EE8MSWIN1250 character set and AL16UTF16 NCHAR character set
. importing MIKE's objects into SCOTT
. importing MIKE's objects into SCOTT
. . importing table                       "T_DEPT"
IMP-00019: row rejected due to ORACLE error 1
IMP-00003: ORACLE error 1 encountered
ORA-00001: unique constraint (SCOTT.UITD) violated
Column 1 10
Column 2 ACCOUNTING
Column 3 NEW YORK
IMP-00019: row rejected due to ORACLE error 1
IMP-00003: ORACLE error 1 encountered
ORA-00001: unique constraint (SCOTT.UITD) violated
Column 1 20
Column 2 RESEARCH
Column 3 DALLAS          1 rows imported
IMP-00017: following statement failed with ORACLE error 20000:
 "BEGIN  DBMS_STATS.SET_INDEX_STATS(NULL,'"ITD"',NULL,NULL,NULL,4,1,4,1,1,1,0"
 ",0); END;"
IMP-00003: ORACLE error 20000 encountered
ORA-20000: INDEX "SCOTT"."ITD" does not exist or insufficient privileges
ORA-06512: at "SYS.DBMS_STATS", line 2121
ORA-06512: at "SYS.DBMS_STATS", line 5393
ORA-06512: at line 1
Import terminated successfully with warnings.

SQL>



Finally, what do we have in Scott's T_DEPT table? (Should be existing records, plus newly added ('test') one):
SQL> show user
USER is "SCOTT"
SQL> select * from t_dept;

    DEPTNO DNAME          LOC
---------- -------------- -------------
        10 ACCOUNTING     NEW YORK
        20 RESEARCH       DALLAS
        30 SALES          CHICAGO
        40 OPERATIONS     BOSTON
        99 test           test

SQL>
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